<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    var minMoves = function (target, maxDoubles) {
      let count = 0;
      while (target > 1 && maxDoubles && ++count) {
        if (target % 2 === 0) maxDoubles--, (target /= 2);
        else target -= 1;
      }
      return count + target - 1;
    };
    console.log(minMoves(5, 0))
  </script>
</body>

</html>